Above is a sketch of the circuit, a two stage symmetrical attenuator consisting of two symmetrical T attenuator pads connected in cascade, with the values that I have worked out for the resistors.
The reduction is 15dB in the first stage, and 8dB in the second stage, giving a total reduction of 23dB.
Given an input Voltage of 10mV, I must work out the output voltage. R_0 = 75 Ohms
The Attempt at a Solution
I am not sure that the solution is this simple, but this is my attempt.
N = 10^(dB/20)
= 10^(23/20) -> total attenuation of both stages used
V2 = (10x10^(-3))/14.13
V2 = 7.08x10^(-4) V
I was possibly supposed to do this using an inverse matrix, however I am not sure of how to do this method.
Can anyone tell me if this is correct, and if it is incorrect help me out?
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